Adaptor for robotics cannula and seal assembly

An adaptor for robotic cannulas addresses the lack of compatible seal assemblies by providing a sealed connection with a modular seal assembly, ensuring pneumostasis in robotic surgical systems.

EP4501269B1Active Publication Date: 2026-06-03ETHICON INC
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
ETHICON INC
Filing Date
2015-12-14
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing trocar cannulas for robotic surgical systems lack a compatible seal assembly that maintains pneumostasis effectively, as they do not have a seal assembly housing for supporting the seal, leading to potential gas leakage during insufflation.

Method used

An adaptor is introduced to connect a modular seal assembly with a robotic cannula, utilizing a seal assembly housing and compatible threading to create a sealed connection, maintaining pneumostasis by using rigid or elastomeric materials and interference fits to ensure gas retention.

Benefits of technology

The adaptor ensures effective pneumostasis by creating a sealed connection between the seal assembly and cannula, preventing gas leakage during robotic surgical procedures.

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Abstract

An adaptor apparatus comprises a seal assembly housing, a channel, and tapered surfaces. The adaptor apparatus is configured to connect a trocar seal assembly with a robotic trocar cannula and maintain pneumostasis in an insufflated body cavity of a patient. The seal assembly housing comprises an open area sufficient to receive, support, and fix the trocar seal assembly within the adaptor apparatus. The channel provides a pathway for inserting instruments from the trocar seal assembly and into the cannula. The robotic trocar cannula includes an annular flange and a tapered proximal opening. The tapered surfaces of the adaptor apparatus are configured to engage the annular flange and the tapered proximal opening of the cannula. The tapered surfaces of the adaptor apparatus are configured to complement the exterior of the annular flange and the angled opening of the cannula.
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